Former militants say their leaders misled them and used them as pawns of war for personal gains.
The operation is a major achievement in the war on terror, observers and officials say.
Kazakhstan participated in the 'Friendship 2017' international counter-terrorism exercises in Pakistan that ended last week.
The discovery of the roughly 1,700-year-old statue, carved from Kanjur stone, was announced in November.
The 2-week special forces exercise in Riyadh will run November 25-December 10.
Current and retired military officials attended the marriage of the first Sikh officer in the Pakistani army, Maj. Harchem Singh.
The government is giving Rs. 30,000 ($300) per month to 500 artists, many of whom have suffered at the hands of militants.
Security forces acted swiftly to kill all five attackers, all of whom were wearing suicide vests, preventing greater carnage, authorities say.